The London interbank offered rate (Libor) for three-month loans in dollars climbed for the first time in 17 days at the end of last week, data from the British Bankers Association (BBA) have shown.Upward movements followed a raft of disappointing corporate results from major financial institutions which caused concerns about the supply and strength of credit to re-emerge.Further figures from the group showed that the Libor-OIS spread - a gauge of major financial institutions' attitudes to lending - was broadly stable at 24 after dropping to the benchmark 25 for the first time in 18 months early last week.Speaking to Bloomberg, Orlando Green, an analyst at Calyon, the investment-banking unit of Credit Agricole, commented: "The background is starting to look better but the strength of the recovery is not yet certain. We need a sustainable recovery to get really functional markets again."Meanwhile, the three-month Libor on sterling continued to fall last week, dropping 11 basis points to 0.77 per cent by Friday (August 14th).